Tube-cleaner.



T. ANDREWS.

TUBE CLEANER.

APPLICATION TILED 001. 27, 1009.

Patented July 22, 1913.

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TUBE CLEANER. APPLICATION FILED OUT. 27, 1909.

Patented July 22, 1913.

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- lN'VE/VTOR omas 01704-605 ATTORNEY UlTED STATLIZS PAETENT @FFlClh.

THOMAS ANDREWS, OF ROCKAWAY, NEW JERSEY, ASSIGN'OR T0 THOMAS ANDREWSIIIANUIEACTURING COMPANY, 015 ROCKAWAY, NEW JEREEY, A CORPORATION 015'NEW JERSEY.

TUBE-CLEANER.

Application filed October 2?, 1909.

To all whom it may concern:

lle it known that It, THOMAS ANDREWS, a citizen of the United States,and residing at Rockaway, county of Morris, and State of New Jersey,have invented certain new and useful Improvements in Tube-Cleaners, ofwhich the tlt'ollowing is a specification.

The invention relates to improvements in automatic controlling apparatusfor tube cleaners and has particular reference to a device used inconnection with rotary fluid driven tube cleaners for removing the scalefrom the interior and exterior walls of a boiler tube and means wherebysaid scale removing means is automatically controlled by means of theoperative parts associated with the body of the cleaner.

One object of the invention is the providing of means associated withthe cleaner for preventing the rotation of the cutting parts thereofuntil the body of the tool is inserted within the walls of a tube.

Another and further object of the invention is the providing of meansassociated with the rotative motor for controlling the admission offluids to said motor While the tool is in or out of operation, thecontrolling means acting as a means of controlling the supply of fluidsto the operative parts of said rotative motor.

in the following is described in connection with the accompanyingdrawings one embodiment of the invention, the features thereof beingmore particularly pointed out hereinafter in the claims.

in the drawings,-l?igure 1 is a longitudinal sectional view of theautomatic controlling means illustrating parts of the tube cleaner indiagram; the position of said cleaner and the parts comprising the controlling means being shown in a position wherein the tube cleaner isbeing operated or actuated within the walls of a boiler tube; Fig. 2. aside elevation of the controlling means and the operative parts of saidcleaner assumed immediately upon the passing of said cleaner beyond thewalls of a boiler tube; and Fig. 3 is an enlarged end elevation of thevalve or that part of the controlling apparatus which controls theadmission of fluids from a suitable receiving chamber to the rotativemotor or the means for actuating the essential and operative parts ofthe tube cleaner.

Specification of Letters Patent.

Patented July 22, 1913.

Serial No. 524,913.

Similar numerals of reference indicate similar parts throughout theseveral views.

In the drawings, 1 designates the conventional outline of a tube formingpart of a series or a plurality of fire or water tubes associated with atubular boiler.

2 indicates a casing of preferably cylindrical form having formedtherein an eccen" tric bore or chamber 3 adapted to receive a concentricrotative motor .1- mounted on sleeve 5 in any suitable manner but inthis instance said motor is preferably shrunl zen on said sleeve theends of which find bearings in boss (3 at one end of said casing 2 andin fluid receiving head 7 at the other end thereof. Sleeve 5 has mountedtherein a shaft 8 having formed therein a. fluid passageway 9 andcarrying at one end thereof a rotary piston head 10 mounted in chamber11 in cutter supporting head 12, and at the other end thereof a shut-offdisk 13 held in place on said shaft 8 by means of a nut 141:. The endsofsaid fluid passage 9 open into chambers 11 and 15, respectively. Thecutter SIIPPOl'tlllg head 12 is rigidly secured in any suitable mannerto the sleeve 5 so as to rotate therewith. For the purpose of supplyingfluids to the rctative motor 4 a fluid port 15 is suitably formed inhead 7 communicating with fluid chamber 15 in said head 7; said port 15communicates with a fluid passageway 16 formed in casing 2 which in turncommunicates with a series of fluids duct-s 17 communicating direct withthe fluid receiving chamber and bearing against the expansion wings onrotative motor L. Fluid is supplied to fluid chamber 1? from anysuitable source, (said source is not shown herein as it does not form ansential feature of the invention) but said fluid is supplied through asuitable flexible hose having associated therewith a hose coupling 18.Shaft 8 is slidably mounted. within sleeve 5 and fastened thereto bymeans of key 19 sliding in keyway 20. To insure an. air-tight chamberiii a stalling be); 21 secured to said head 12 may be utilized, saidstu'l'ling box engaging the outer periphery of piston 10. The head ofsaid piston 10 has pivotally mounted therein as at lin s 24 engagingcollars arms 26. Links 2 ft are also pivot-ally mounted in collars 25 asat 27. Said cutter arms 26 have mounted therein a retaining bolt 28 oncutter carrying a plurality of cutters 29 held in position on said arms26 by means of nuts 30.

The operation of the device is as follows: The device is inserted withinthe walls of a boiler tube and when in this position cutter arms 26cause the piston 10 to be pushed backwardly through the medium of links2% which causes shut-off disk 13 to uncover port 15 permitting the fluidfrom a suitable fluid supply source to pass through a chamber 15 toenter therein and pass to port 16 whence it passes through ducts 17 intothe fluid chambers and motor 4. While the device is within the confinesof the tube 1, the apparatus is rotated at a high rate of speed and whenthe arms 26 carrying the cutters 29 pass beyond the end or opening ofthe tube said arms swing outwardly which causes piston 10 to draw theshaft 8 with it which in turn causes shut-ofl disk 13 to seat itselfover the mouth or intake port 15 and cause the instantaneous stoppage ofthe rotative parts of the device. Further while the device is within thewalls of the tube a fluid pressure is supplied to chamber 11 throughfluid passageway 9 impinging itself against piston 10 and compelling thearms 26 carying cutters 29 to be forced outwardly into contact with thescale or other foreign substance on the interior walls of the tube.

hat I claim and desire to secure by Let ters Patent of the United Statesis:

1. A device of the character described comprising a casing provided witha pressure chamber, a fluid reception head, a rotary motor in saidpressure chamber, a sleeve associated with said rotary motor mounted insaid casing and reception head, a rotary head carried by said sleeve andprovided with a recess, a shaft keyed in said sleeve and provided with afluid passage-way communicating with said rotary head and said receptionhead, said shaft being adapted to move longitudinally in said sleeve,apiston head carried by said shaft adapted to engage the recess in saidrotary head, said casing and fluid reception head being provided with aplurality of ports communicating with a fluid supply and said pressurechamber, and a shut-off disk carried by said shaft adapted to controlthe admission of fluids fromsaid fluid supply to said ports in saidcasing and reception head, the position of said shut-off disk beingprimarily controlled by reason of the position of said piston head insaid rotary head.

2. A device of the character described including a controlling means fortube cleaners comprising a casing provided with a pressure chamber, afluid reception head, a sleeve rotatably mounted in said casing andhead, a rotary motor in said pressure chamber and-rigidly mounted onsaid sleeve, an auxiliary rotary head carried by said sleeve andprovided with a recess, a shaft keyed in said sleeve and provided with afluid passage-way communicating with said rotary head and said receptionhead, said shaft being adapted to move longitudinally in said sleeve, apiston carried by said shaft engaging said recess, said casing and headhaving cut therein a plurality of communicating fluid ports, and ashut-off disk carried by said movable shaft adapted to control theadmission of fluid from a fluid supply into said ports by reason of theposition of said piston in said auxiliary rotary head.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

THOMAS ANDREWS. lVitnesses:

Eow. T. SNOOK, ROBERT /V. ASHLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

